Swift-XRT Survey of Fermi Unassociated Sources

These results are part of the Swift program to follow-up Fermi unassociated sources in an attempt to find X-ray counterparts to the unidentified gamma-ray sources. As new observations are performed, these pages will be updated in nearly real time. Please use these results as a guide and proceed with caution when using them in a publication since they are the result of an automated analysis.

When using these data and results in publications, please reference M.C. Stroh & A.D. Falcone 2013, ApJS, 207, 28; arXiv: 1305.4949 for a description of many of the analysis techniques used to reduce these data (note: a more detailed paper describing the complete data set and analysis is forthcoming). Please contact Abe Falcone and Michael Stroh at unassociated@swift.psu.edu if you have any questions about the program or the analysis, or to simply to let us know that you've made use of these data.
Caution: For completeness, sources are listed if the "detection" exceeds 3 sigma. The significances and images are shown so you can make more stringent significance cuts, if desired.

4FGL J1528.4+2004

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1528.4+2004 Swift-XRT detections in the field for 4FGL J1528.4+2004

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 28 35.84 +20 04 23.04 4.11 (2.3 ± 0.2) x 10-2 129 10.300 10.290
2 15 27 55.65 +20 06 07.45 5.70 (2.8 ± 0.8) x 10-3 16 3.380 3.386

Rejected Excesses (Due to Overlaps or SNR(Sosta) < 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 27 38.12 +20 10 07.05 5.89 (1.4 ± 0.7) x 10-3 12 2.384 2.049

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1528.4+2004 Swift-XRT image with known radio, optical and UV sources for 4FGL J1528.4+2004

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J152836.5+200423 15 28 36.50 +20 04 23.52 2.00 ROSAT
2RXS J152836.5+200427 15 28 36.53 +20 04 27.48 2.00 ROSAT
2RXS J152836.5+200427 15 28 36.53 +20 04 27.48 2.00 ROSAT
2 1SAX J1528.1+1954 15 28 07.61 +19 54 26.28 11.18 BEPPOSAX

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
FIRST J152835.7+200420 15 28 35.81 +20 04 19.92 1.84 FIRST
1 NVSS J152835+200418 15 28 35.81 +20 04 18.84 1.84 NVSS
2 NVSS J152838+200458 15 28 38.90 +20 04 58.08 2.59 NVSS
FIRST J152838.9+200502 15 28 38.90 +20 05 03.12 2.61 FIRST
3 SAO 83835 15 28 13.92 +20 04 24.60 3.31 SAO
PPM 104051 15 28 13.87 +20 04 25.32 3.32 PPM
BD+20 3112 15 28 13.85 +20 04 25.32 3.33 ACRS
FIRST J152817.3+200052 15 28 17.30 +20 00 51.84 4.44 FIRST
TGSSADR J152809.1+200457 15 28 09.19 +20 04 58.08 4.45 GMRTAS150M
FIRST J152809.1+200458 15 28 09.10 +20 04 58.08 4.46 FIRST
4 NVSS J152808+200451 15 28 08.81 +20 04 51.96 4.52 NVSS
FIRST J152817.5+200039 15 28 17.50 +20 00 39.96 4.59 FIRST
5 NVSS J152817+200034 15 28 17.71 +20 00 33.84 4.65 NVSS
TGSSADR J152807.7+200427 15 28 07.70 +20 04 27.12 4.77 GMRTAS150M
6 FIRST J152807.6+200425 15 28 07.61 +20 04 26.04 4.79 FIRST
QORG J152846.9+200243 15 28 46.90 +20 02 43.08 4.80 QORGCAT
7 FIRST J152846.9+200244 15 28 46.99 +20 02 44.16 4.80 FIRST
FIRST J152818.0+200016 15 28 18.10 +20 00 16.92 4.86 FIRST
8 SDSS J15288+2006 15 28 49.01 +20 06 47.88 5.42 VERONCAT
9 GB6 J1528+2004 15 28 04.70 +20 04 12.00 5.48 GB6
10 NVSS J152838+200934 15 28 37.99 +20 09 33.84 5.56 NVSS
FIRST J152853.2+200659 15 28 53.30 +20 07 00.12 6.42 FIRST
11 NVSS J152853+200655 15 28 53.59 +20 06 56.16 6.46 NVSS
QORG J152810.1+201030 15 28 10.10 +20 10 30.00 7.30 QORGCAT
FIRST J152810.1+201037 15 28 10.20 +20 10 36.84 7.39 FIRST
TGSSADR J152810.1+201037 15 28 10.20 +20 10 37.92 7.39 GMRTAS150M
12 NVSS J152809+201035 15 28 09.91 +20 10 36.12 7.40 NVSS
FIRST J152755.6+200607 15 27 55.61 +20 06 07.92 7.77 FIRST
QORG J152755.5+200606 15 27 55.51 +20 06 06.12 7.79 QORGCAT
13 NVSS J152755+200612 15 27 55.30 +20 06 11.88 7.87 NVSS
14 OR+242 15 28 15.60 +19 56 39.84 8.39 DIXON
15 FIRST J152826.3+195540 15 28 26.30 +19 55 41.16 8.86 FIRST
16 NVSS J152827+201340 15 28 27.41 +20 13 40.08 9.14 NVSS
FIRST J152827.4+201341 15 28 27.41 +20 13 41.16 9.15 FIRST
TGSSADR J152827.4+201343 15 28 27.50 +20 13 44.04 9.19 GMRTAS150M
17 FIRST J152901.0+195935 15 29 01.01 +19 59 35.88 9.20 FIRST
18 NVSS J152906+200140 15 29 06.10 +20 01 40.08 9.39 NVSS
19 FIRST J152907.9+200518 15 29 07.90 +20 05 17.88 9.41 FIRST
FIRST J152906.5+200138 15 29 06.50 +20 01 37.92 9.50 FIRST
20 FIRST J152749.1+200152 15 27 49.10 +20 01 53.04 9.51 FIRST
21 NVSS J152750+200804 15 27 50.09 +20 08 04.92 9.59 NVSS
FIRST J152805.0+201229 15 28 05.11 +20 12 29.16 9.60 FIRST
22 NVSS J152805+201236 15 28 05.81 +20 12 36.00 9.61 NVSS
FIRST J152749.6+200806 15 27 49.61 +20 08 07.08 9.70 FIRST
23 FIRST J152841.4+201344 15 28 41.40 +20 13 44.04 9.72 FIRST
QORG J152841.3+201346 15 28 41.30 +20 13 45.84 9.74 QORGCAT
24 PGC 1614442 15 29 09.31 +20 02 40.92 9.87 PGC2003
25 FIRST J152900.3+195700 15 29 00.41 +19 57 01.08 10.70 FIRST
FIRST J152907.9+201005 15 29 07.90 +20 10 05.88 10.90 FIRST
26 NVSS J152907+201010 15 29 07.90 +20 10 09.84 10.94 NVSS
QORG J152907.9+201014 15 29 07.90 +20 10 14.16 10.96 QORGCAT
27 NVSS J152911+200904 15 29 11.40 +20 09 03.96 11.16 NVSS
28 SDSS J15281+1953 15 28 08.30 +19 53 57.84 11.54 VERONCAT
QORG J152808.2+195356 15 28 08.21 +19 53 56.04 11.58 QORGCAT
29 FIRST J152802.5+195436 15 28 02.59 +19 54 37.08 11.58 FIRST
30 NVSS J152844+201536 15 28 44.11 +20 15 37.08 11.70 NVSS
31 FIRST J152841.5+195309 15 28 41.50 +19 53 09.96 11.81 FIRST
FIRST J152752.6+195457 15 27 52.61 +19 54 57.96 12.68 FIRST
32 NVSS J152752+195459 15 27 52.49 +19 54 59.04 12.68 NVSS
33 FIRST J152907.3+195545 15 29 07.39 +19 55 45.84 12.74 FIRST
QORG J152752.4+195452 15 27 52.39 +19 54 51.84 12.79 QORGCAT
34 NVSS J152847+201631 15 28 47.11 +20 16 32.16 12.80 NVSS
QORG J152753.8+201624 15 27 53.81 +20 16 23.88 14.33 QORGCAT
35 FIRST J152743.5+195442 15 27 43.49 +19 54 42.12 14.35 FIRST
36 FIRST J152753.7+201629 15 27 53.81 +20 16 30.00 14.41 FIRST
QORG J152919.0+201243 15 29 19.01 +20 12 42.84 14.50 QORGCAT
37 FIRST J152919.1+201246 15 29 19.10 +20 12 46.08 14.55 FIRST
QORG J152914.1+201417 15 29 14.11 +20 14 17.16 14.56 QORGCAT
FIRST J152914.1+201419 15 29 14.11 +20 14 18.96 14.59 FIRST
38 NVSS J152914+201421 15 29 14.11 +20 14 21.12 14.61 NVSS
TGSSADR J152914.2+201420 15 29 14.21 +20 14 21.12 14.63 GMRTAS150M

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